Switch mechanism



"April y29 1924.

H. J. MOREY ET;v 'AL-1 SWITCH MECHANISM- Filed Au-g. 22, 1921 3 Sheets-Sheet 2 IN V EN TORS.

ATTORNEYS,

April 29 1924.

1,492,384 H. J. MoREY ET AL SWITCH MECHANISM 1921 5 Sheets-Sheet 3 Filed Aug. 22

Z/M/%%MMZ%W INVENToRs "A TTORNEYS Patented Apr. 29, 1924.

UNITED STATES Lacasse PATENT clasica HARRY J'. MOREY AND DON N. THOMPSON, OF SYRACUSE, NEW YORK, ASSIGNORS T0 PASS & SEYMOUR INC., 0F SOLVAY, NEW YORK, A CORPORATION O'F NEW YORK;

SWITCH` Mncnnnrsiu Application .filed August 22, 1921. Serial No. 494,188.

To all whom t may concern.'

Be it known that we, HARRY J. MOREY and DON N. TiroMrsoN, citizens of the United States, and residents of Syracuse, in the county of Onondaga Vand State of New York, have invented a certain new and useful Switch Mechanism, of which the fol'- lowing is a specification.

This invention has for its object a. switch mechanism particularly applicable for lamp sockets and especially adapted for what are called double pull chain switches ory indicating pull switch, which mechanism is extremely simple in construction, economical in manufacture. and highly efficient and' du-l rable in use. The invention consists in the novel features and in the combinations and constructions hereinafter set forth kand claimed.

In describing this invention, reference is had to the accompanying drawings, in which like characters designate corresponding parts in all the views.

Figure 1 is a vertical sectional view of my switch mechanism showing the same embodied in a lamp socket which is also shown in vertical section.

Figure 2 is an end view looking upwardly in Figure 1, parts being broken away. f

Figure 3 lis a plan view looking down.

wardly on the upper section or block of the lamp socket, the casing being removed.

Figure 4 is a plan or upper face view of the lower section or block of the socket.'k

Figure 5 is a vertical sectional view taken on'the plane of lines 5"-5, Figure a.

Figure 6 is an enlarged plan view of the switch member.

Figure 7 is an enlarged view on the plane of lines 7-7, Figure 6.

Figures 8 and 9 are respectively a vertical longitudinal sectional view and an inverted plan view of our switch mechanism applied to, or embodied in, a flushy wall switch, the bottom plate of the insulating body or housing for the mechanismybeing removed. f f

Figure 10 is a plan view, the wall being partly broken away.

Figure 11 is a sectional removed.

Figure 12 is a detail view of the switch member.

This switch mechanism comprises generally, a reciprocally movable switch member,

plate view parts kbeing embodied in a lamp socket which may kbe of.y

any suitable form, size and construction, it being hereshown as consisting of upper and lower sections or blocks 'of insulation l, 2, provided with suitable recesses in their opposing faces for the switch mechanism, and the outer or sleeve terminal 3 mounted on thelower section 2 of insulation, a central terminal 4 also mounted on the lower sec tion 2, the outer terminal 3 being connected by means of a conductor 5 to a wire terminal 6 and the central terminal being connected by the conductor 7 to a switch contact'S, which is connectible to and disconnectible from the secondswitch contact 8a to the movable switch'm'ember. 'The contact 8a is connected to the other wire terminal 6*.

These contacts 8, 8a are exposed in recesses in 4the upper side of the lower block of insulation 2 separated by the barrier 9. The lamp socket also vincludes a suitable casing 12, whichfmay be of any suitable form, size and construction."

13 is a shiftable switch member which in this form of our invention is shown as a plate slidable lrectilinearly or in a plane on thefbottom of a recess 14 in the upper side ofthe block 2 ofinsulatiom'or upon a piece of insulation 15 `at the bottom of the recess and as having prongs orarms 16, 17for engaging respectively, the contacts 8, 8a. The switch member further includes a strip of insulation 18 on the upper side thereof which is held in position by upturned ends 19 and 20, on the switch member. The switch member is formed up from sheet metal.

21 yis the actuator which is here shown as reversely movable relatively to the sliding movement of the switch member and as movable in an arc or about an axis. The actuator is here shown as a yoke, the arms of which have outturned lugs or trunnions 22 at their ends `mounted. in suitable bearings 23 therefor in'the'block 2 in the sides and near the bottom of the recess 14, the yoke being arranged with its pivotal axis extending crosswise of the path of movement of the switch member.

The spring means comprises a spring 24. movable with the actuator 21 and extending or arranged to thrust in a general direction radially to the axis of the actuator 21, and also preferably a guidek for the spring, as a push bar or pin 25.

'As here shown, the spring 24 encircles the push bar or pin 25 which is slidable at one end through an opening 26 in the intermediate part of the yoke 21 and has its other end pivotally connected to the switch member 13 between the ends thereof, it being here shown as having laterally extending shoulders 27 near its lower end which thrusts against the upper face of the strip of insulation 18 of the switch member 13, the end of the pin belov7 the shoulders extending-into a slot 28 in the switch member and the insulation thereof.

The pivotal connection between the push bar 25 and the switch member 13, that is, the'point at which the shoulders 27 engage' the upper face of the switch member is nor- A mally at one side or the other of the axis of the yoke 21 so that the angle of the pin through which the thrust of the spring is transferred to the switch member, is at a less angle of inclination relatively' to the. switch member than the yoke when the yoke is in either of its extreme positions.

Upon movement of the yoke from one of its extreme inclined positions to the other, after the yoke passes beyond a line normally or at a right angle to the movement of the switch member, the inclination of the bar 25 and spring 24 is reversed and hence the spring thrusts against the switch member in a reverse direction and shifts the push bar 25 endwise and slides the switch member 13 from its off to its on position, or from its on to its off position, as the case may be.

The actuator or yoke 21 is operated by means of cords or so-called chains 29 connected in any suitable manner as at 30 to the intermediate part of the yoke and extending in opposite directions outwardly through the casing 12 or guide passages 31 provided on opposite sides of the casing.

Obviously, upon pulling of one cord 29 from the position shown in Figure 1, the position of the yoke 21 will be reversed,

causing the spring 24 to thrust thel switch member through the rod 25 to the right or on position. Then upon pulling of the other chain-29 the position of the yoke member will be again reversed into its position shown in Figure 1, and the spring will thrust the switch member to the left into the position shown in Figure 1. The chains are preferably the same length and may be differently colored or otherwise differentiated. Hence, one chain will hang lower than the other and indicate whether the switch is on 0I, (COE-7,

In Figures 8 and 9, 10 and 11, this switch mechanism is shown as applied to a wall switch. 41 designates the body or housing of the switch, it being formed of a block of suitable insulating material formed with a recess 42 opening through its bottom or lower side.

43 is the switch member vwhich slides along a smooth surface provided on a strip or insert 44 on an inner face of the top' wall of the block 41. The switch member is bifurcated at its ends at 45, 46 and the bifurcations move astride projections or barriers 47 depending from the top wall of the block 41. In the illustrated embodiment of this wall switch but one pair of'bifurcations, those designated 45, are used to conduct the current, these bifurcations coacting 'with contacts 48, 49 exposed in the recess 42 on the inner face of top wall thereof and in line with the bifurcations 45, these contacts being in circuit with wire terminals 50, 51, exposed in the outside of the block 41. Obviously, the other pair of bifurcations 46 may in similar manner coact with like contacts of additional wire terminals.

52 is the actuator reversely movable relatively to the sliding switch member 43, it being a yoke arranged astride the switch member 43, and having its intermediate portion 53 extending above the switch mem- -ber crosswise thereof and its arms extending below the switch member. The yoke is provided with trunnions 54 seated in suitable bearings or notches and the intermediate part thereof is provided with a handle 55. The trunnions 54 as here illustrated, seat in notches 56 in a'supporting plate 57 on the top of the block 41. The notches are formed in the upper edges of down-turned lugs 54a on the sides of the plate 57, the lugs extending in recesses in the top wall of the block 41. The intermediate part of the yoke extends in a transverse slot 58 in said plate and the handle extends through a central elongated hole 58a in said plate. The slot 58 is alined with the notches 56. The

plate is provided with lugs 59 extending beyond the'ends of the block and to which the wall plate 60 is secured as by screws 61. The plate 57 is secured in' position in an suitable manner, here as by screws 62 exten ing through the block from the lower or rear side thereof and threading in the plate. The screws 62 also serve to hold the cover plate 62t for the recess 42 in position. The handle 55 of the switch extends through a slot 63 in the wall plate 60 and the slot is closed by a slide 64 fitting and movable with the handle 55 and sliding between the wall plate 60 and the supporting plate 57.

It is here illustrated as guided in its movement by lugs 65 which extend into slots 66 in the supporting plate 57. rihe plate has the words on and od thereon on opposite sides of the handle 55 and arranged to come into alinement with the ends of the elongated slot 63, the word off being exposed through one end of the hole when the switch is 0H and the word on through the other end of the hole when the switch is Non.

The spring means of this switch mechanism is substantially the same as that shown in Figs. l and 5, and consists of a push arm 67, thrusting at one end against the switch member 43 or a bearing 68 seatedin a layer of insulation 69 on the switch member 43 and a spring 70.

The spring 70 encircles the push rod and thrusts at one end against a head 71 on the rod adjacent the switch member and at its other end against an abutment 72, carried by the yoke arms and formed with a guide or hole 73 in which the push rod slides. The abutment is bent from sheet metal on the form of a channel and the ends thereof receive inturned lugs 74 on the yoke arms. The abutment has a rocking movement on the lugs during the movement of the yoke 52.

The operation of the switch mechanism shown in Figs. 8 and 9 is the same as that shown in Figs. l and 5. Upon throwing of the handle 55 in one direction or the other the spring 70 is tensioned as its lower side swings from one side to the other of the center line of the switch member and throws the switch member.

What we claim is:

l. In a switch mechanism, the combination of a reciprocally movable switch member, an actuator in the form of a yoke having its arms pivoted on an axis extending transversely of the path of movement of the switch member, a push pin having one end slidably engaged with the intermediate part of the yoke and its other end pivotally connected t0 the switch member, and a spring thrusting at one end against the intermediate part of the yoke and at its other end, against the pin, substantially as and for the purpose set forth.

2. In a switch mechanism, the combination of a reciprocably movable switch member, an actuator in the form of a yoke having its arms pivoted on an axis extending transversely of the path of movement of the switch member, a push pin having one end slidably engaged with the intermediate part of the yoke and its other end 'pivotally connected tothe switch member and a spring thrusting at one end against the intermediate part of the yoke and at its other end against the pin, the pivotal axis of the pin between said pin and the switch member being arranged at one sidel or the other of the axis of the yoke when the pin is in' either of its extreme inclined positions, substantially as and for the purpose described.

In testimony whereof, we have hereunto signed our naines at Solvay, in the county of' Onondaga, and State of New York, this 13th day of August, 1921.

HARRY J. MOREY. DON N. THOMPSON. 

